A study on spawning of bull frogs (Rana catesbeiana) using induced mating

A study on spawning of bull frogs (Rana catesbeiana) using induced mating

Ribeiro Filho, O.P.; Lima, S.L.; Andrade, D.R.; Seixas Filho, J.T.

Revista Brasileira de Zootecnia 27(2): 216-223

1998

60 male and female bull frogs were injected with a total dose of 1, 3, 5 or 7 mg crude pituitary extract (CHE)/kg body weight, administered at intervals of 6, 12 or 18 h. The incidence of spontaneous spawning was 25-100% in treated frogs vs. 0% for untreated controls, the best results being obtained after treatment with 5.5 or 7.7 mg CHE at intervals of 6 or 18 h.